Water quality of the Koejong-reservoir was estimated by using the ecological model to evaluate the effects of industrial sewage discharge. State variables consist of POC, DOC, phytoplankton, DIP, DIN, DO and COD. Initial conditions for the compartment are applied to the model based on the observed results. The reproducibility was found to be satisfactory with the relative error ranging between the calculated value and the observed value. Water quality simulation was conducted by applying additional industrial sewage discharge into the Koejong-reservoir. The concentrations of COD, Chl.a, DIP and COD showed fluctuations of a narrow range. The increment percentages of Chl.a, COD and DIP were 26.6%, 20.2% and 18.2%, respectively. In the case of DO, the concentration decreased 4.8%.

Sheo, H.J., 1978. The Hygienic Chemical Study on the Water Quality and the Pollution Process of the Artificial Lake Recently Constructed - On Gwangju Lake, Damyang Lake, Naju Lake and Jangseong Lake in the upper stream of Yeongsan River -. The Korean Society of Limnology, 11(3): 67-79.